The X-ray bulb tube is one of the most important components of X-ray, which is the component that generates X-rays, and its role is to convert electrical energy into X-rays. Since the discovery of X-rays by Roentgen in 1895, the X-ray bulb tube has gradually developed in the direction of high power, small focus and specialization, and its structure has been improved continuously, with the emergence of a fixed anode, rotating anode and a variety of special X-ray tube.